Drop-cord rosette



' Nov. 13,1928. 1,691,675

E. G. SMITH DROP 0013i) ROSETTE Filed Sept. 20 1 2 2 Sheets-Sheet 1 I NVEN TOR;

' ATTORNEYS,

Nov. 13, 1928.

E. G. SMITH DROP CORD ROSETTE Filed Sept. 20. 1 5 2 Sheets-Sheet 2 INVEN TOR.

'Tili Patented Nov. 13, 1928.

is as g PATENT,

ELDA. G. SMITH, or SYRACUSE, nnwroan, Assrenoa' ro onousn-Hnins c'oivranY, or SYRACUSE, new Ycnir, a conronarronor new YORK.

DROP-003D EGSZETIE.

This invention has for itsobject what is commer ially known as drop cordrosette, which is particularly simple and strong in construction and inwhich the terminals are relieved or" the s pporting strain and theelectrical connection between the terminals and the mechanical conectio-n between the ec tions of the casing are, made simultanei uponsuccessive endwise and partial rotary movement ofthe cap section. p I vThe invention consistsiin the novel featuresand in the coml'iinationsand 'constructions hereinafter set forth and claimed.

in describing this invention, reference is had to the accompanyingdrawings in which like characters designate corresponding parts in allthe views. I v

Figure 1 is an elevation of this dr rosette, the conduit outlet boz;being i. in dotted lines.

Figure 2 is a vertical section on line Fig. 1.

Figures 3 and 41 are face views of the base and cap sections and partscarried thereby.

Figure 5 is aplan view of the base section.

Figure 6 is an inverted plan view of the cap section. v

This drop cord rosette comprises generally a case composed of a basesection and a cap section having means for interlocking upon successiveendwise and partial rotary move' ments of the cap section, terminalblocks car ried by the sections, terminals carried by the blocks andarranged to interlock during such endwise and partial rotary movementsof th cap section. V

1 designates the base of the casing, which is formed with acircular'opening. As here shown, this base section is constructed to bemounted upon an outlet box 2 having a circular opening in one side andis provided with screws 8, by means of which it is secured to the openside of box 2. The base section is thus annular or ring shaped ingeneral form. The base section is also formed with a cylindrical flange4- skirting the opening in such section, this cylindrical flan ge having an outturned lip or annular flange 5 formed with notches 6therethrough, which are usually located diametrically opposite eachother.

7 is the cap section. It is formedwith a cup-shaped portion 8 and acentral opening; 9 for the outlet of the cord. The'cuphaped portionincludes a-cylindrical flange 10 which incloses the cylindrical flange 4of the base and butts against the base around the cylindrical flanged,the cylindrical flange 10 133V? ing inwardly extending shoulders 11 forentering the notches 6 upon endwisemovement or" the cap and forinterlocking behind the annular flange '5 upon the partial rotarymovement or the cap and thus looking or minals 13,141 on its inner faceexposed through the openinginclosed'by the cylindrical flange 4:. Theblock 12 also has wire terminals or binding devices-15 16 011 its upperside to which the wires in the outlet box 2 areconnected'. This block issecured to the base 1 in any suitable manner asby screws 17extendingthrough holes or passages l'f in the block and threading intoholes in the base 1.

18 is a terminal block mounted in the cap and having terminals 19, 20complemental to the terminals 13, 14 and arranged to interlock therewithupon successive endwise and partial rotary movements of the cap. Theseterminals. 19. 20 are formed integral with binding): devices 21, 22' towhich the Wires of the drop cord are connected. which wires extendthrough a central opening 23 in the block and out through the opening 9'in the cap. The cap is also formed with a hand hold or wings 24 onopposite sides of a hub 25 thereon'and one-half or section 26 of thishub is removable and secured in place by screws 25 the section or half26 being removable fer the purpose ofinserting' wires or connecting themto wire terminals.

The terminals 13, 14 and 19, 20 are here shown as hook-shaped and formedwith interlocking bosses and depressions arranged to coact snap catchfashion. Also springs 27., 28 are arranged beneath the terminals 13, 1 1to press the terminals 19. 20 firmly incontact with the terminals 13,14. Terminals 13, 14: and 19, 20 are spaced. apart around the axis ofthe cap. are placed diametrically opposite each other and are arrangedto interlock. or the terminals 19, 20 are arranged to hook under theterminals 13, 14 upon rotary movement of the cap and these terminals areso spaced apart as to come into interlocking relation upon endwisemovement of the cap when the shoulders 11 of the cap are passing throughthe notches 6 of the base.

In operation, the base 1 with its terminal block thereon is secured tothe box, the connection between the wires in the box and the wireterminals 14 on the base having been first made. The .cap 7 with thewires of the drop cord connected to the binding terminals 21, 22 is thenplaced on the base with the shoulders 11 passing through the notches 6and with the terminals 19, passing between the terminals 1-3, 14 of thebase. The cap is then rotated carrying the shoulders 11 intointerlocking engagement with the flange 5 of the base and carrying theterminals 19, 20 under the terminals 1-3, 14. The reverseof 7 thesemovements detaches the capfrom the base.

By theconstruction and the arrangement of the cap and base and theterminals associated therewith, the electrical and mechanicalconnections are made at the same time by the small endwise movement ofthe cap and less than a quarter turn of the cap. Hence, no tools arerequired to connect and disconnect the cap and the base. By this device,dr'op cord replacements can be made in a minimum time and, owing to theinterlock between the sections of the casing, there is no strain on theterminals and all current carrying parts are completely protected.

What I claim is:

V -A, drop cord rosette comprising a casing consisting of a ring-shapedbase and a cap, the base having a cylindrical flange around the openingthereof and an outturncd annular flange at the end of the cylindricalflange, the annular flange being formed with notches therethrough, andthe cap being formed with a cup-shaped portion to receive thecylindrical flange and with diametrically opposite shoulders for passingthrough the notches and interlocking with the annular flange uponsuccessive endwise and partial rotary movement of the cap, a terminalblock mounted on the base having hook-shaped terminals exposed to theopeningin the base, and a terminal block on the cap having coinplementalhook-shaped terminals arranged to hook under the terminals associatedwith the base upon successive endwise and partial rotary movements ofthe cap.

In testimony whereof, I have hereunto signed my name, at Syracuse, inthe county of Onondaga, and State of New York, this th day of June,1923. v

ELDA G. sMrrH.

